[coreboot-gerrit] [S] Change in coreboot[master]: drivers/intel/fsp2_0: Add API to find FSP resource HOB by GUID

[Pratikkumar V Prajapati (Code Review)]

Pratikkumar V Prajapati has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/72721 )

Change subject: drivers/intel/fsp2_0: Add API to find FSP resource HOB by GUID
......................................................................

drivers/intel/fsp2_0: Add API to find FSP resource HOB by GUID

The API finds the FSP resource HOB for the given GUID.
Returns the pointer to the HOB if found, otherwise NULL

Change-Id: I4ebc9b7d214e5fc731ae45f28e7f5732a7635cbc
Signed-off-by: Pratikkumar Prajapati 
---
M src/drivers/intel/fsp2_0/hand_off_block.c
M src/drivers/intel/fsp2_0/include/fsp/util.h
2 files changed, 32 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/21/72721/1

diff --git a/src/drivers/intel/fsp2_0/hand_off_block.c b/src/drivers/intel/fsp2_0/hand_off_block.c
index aae1ff8..227f412 100644
--- a/src/drivers/intel/fsp2_0/hand_off_block.c
+++ b/src/drivers/intel/fsp2_0/hand_off_block.c
@@ -245,6 +245,20 @@
    return NULL;
 }

+const void *fsp_find_resource_hob_by_guid(const uint8_t *guid)
+{
+	const struct hob_header *hob_iterator;
+	const struct hob_resource *res_hob;
+
+	if (fsp_hob_iterator_init(&hob_iterator) != CB_SUCCESS)
+		return NULL;
+
+	if (fsp_hob_iterator_get_next_guid_resource(&hob_iterator, guid, &res_hob) == CB_SUCCESS)
+		return res_hob;
+
+	return NULL;
+}
+
 static void display_fsp_version_info_hob(const void *hob)
 {
 #if CONFIG(DISPLAY_FSP_VERSION_INFO) || CONFIG(DISPLAY_FSP_VERSION_INFO_2)
diff --git a/src/drivers/intel/fsp2_0/include/fsp/util.h b/src/drivers/intel/fsp2_0/include/fsp/util.h
index 566fad9..6c9d397 100644
--- a/src/drivers/intel/fsp2_0/include/fsp/util.h
+++ b/src/drivers/intel/fsp2_0/include/fsp/util.h
@@ -143,6 +143,11 @@
 void lb_string_platform_blob_version(struct lb_header *header);
 void report_fspt_output(void);
 void soc_validate_fspm_header(const struct fsp_header *hdr);
+/*
+ * This function finds the FSP resource HOB for the given GUID.
+ * Returns the pointer to the HOB if found, otherwise NULL
+ */
+const void *fsp_find_resource_hob_by_guid(const uint8_t *guid);

/* Fill in header and validate a loaded FSP component. */
 enum cb_err fsp_validate_component(struct fsp_header *hdr, void *fsp_blob, size_t size);